If $10-$year T$-$bonds have a yield of $7\mathrm{.}0\%,10-$year corporate bonds yield $9\mathrm{.}5\%,$ the maturity risk premium on all $10-$year bonds is $1\mathrm{.}3\%,$ and corporate bonds have a $0\mathrm{.}4\%$ liquidity premium versus a zero liquidity premium for T$-$bonds, what is the default risk premium on the corporate bond?

a$.2\mathrm{.}90\%$

b$.2\mathrm{.}50\%$

c$.0\mathrm{.}80\%$

d$.5\mathrm{.}70\%$

e$.2\mathrm{.}10\%$